Art Deco Platinum Engagement Ring, 0.92 CaratsArt Deco engagement ring in platinum set with a GIA certified 0. 93 carat old mine cut diamond. The engagement ring has classic geometric lines and sits low to the finger. The shoulders are accented by approximately 0. 20 carats total weight in single cut diamonds. The face of the ring measures approximately 5. 8 mm and the band is approximately 2. 3 mm wide at the front and tapers to 1. 26 mm at the back. DIAMONDS: GIA certified Old mine cut centre